import classNames from 'classnames'
import Count from '../Count'
import './index.scss'
import { useDispatch, useSelector } from "react-redux";
import { clearCart, decreCount, increCount } from '../../store/modules/takeaway';
   // 清除购物车
import { useState } from "react";
const Cart = () => {
  const dispatch = useDispatch();
  const { cartList } = useSelector((state) => state.foods);
  const total = cartList.reduce(
    (sum, item) => sum + item.count * item.price,
    0
  );
  // 控制购物车打开关闭的状态
  const [show, setShow] = useState(false);
  const isShow = () => {
    if (cartList.length) {
         setShow(!show);
    }
  };
  const onClearList=()=>{
        dispatch(clearCart());
        setShow(false);
  }
  // const cart = []
  return (
    <div className="cartContainer">
      {/* 遮罩层 添加visible类名可以显示出来 */}
      <div
        className={classNames("cartOverlay", { visible: show })}
        onClick={isShow}
      />
      <div className="cart">
        {/* fill 添加fill类名可以切换购物车状态*/}
        {/* 购物车数量 */}
        <div className={classNames("icon")} onClick={isShow}>
          {cartList.length && (
            <div className="cartCornerMark">{cartList.length}</div>
          )}
        </div>
        {/* 购物车价格 */}
        <div className="main">
          <div className="price">
            <span className="payableAmount">
              <span className="payableAmountUnit">¥</span>
              {total}
            </span>
          </div>
          <span className="text">预估另需配送费 ¥5</span>
        </div>
        {/* 结算 or 起送 */}
        {cartList.length ? (
          <div className="goToPreview">去结算</div>
        ) : (
          <div className="minFee">¥20起送</div>
        )}
      </div>
      {/* 添加visible类名 div会显示出来 */}
      <div className={classNames("cartPanel", show && "visible")}>
        <div className="header">
          <span className="text">购物车</span>
          <span className="clearCart" onClick={onClearList}>
            清空购物车
          </span>
        </div>

        {/* 购物车列表 */}
        <div className="scrollArea">
          {cartList.map((item) => {
            return (
              <div className="cartItem" key={item.id}>
                <img className="shopPic" src={item.picture} alt="" />
                <div className="main">
                  <div className="skuInfo">
                    <div className="name">{item.name}</div>
                  </div>
                  <div className="payableAmount">
                    <span className="yuan">¥</span>
                    <span className="price">{item.price}</span>
                  </div>
                </div>
                <div className="skuBtnWrapper btnGroup">
                  <Count
                    count={item.count}
                    onPlus={() => dispatch(increCount({ id: item.id }))}
                    onMinus={() => dispatch(decreCount({ id: item.id }))}
                  />
                </div>
              </div>
            );
          })}
        </div>
      </div>
    </div>
  );
}

export default Cart
